Graphite Rigid Felt
Rigid Graphite Felt
The production process of rigid graphite felt adopts professional technology and integrates graphite paper, graphite felt, and carbon cloth through a unique method. It is then cured and formed, followed by secondary high-temperature purification.
Graphite hard felt exhibits high purity and a rich carbon content, showcasing excellent ablative resistance and thermal shock resistance. Its air scouring, heat insulation, and heat preservation performance are also outstanding. It is primarily used in ultra-high temperature vacuum high-pressure sintering furnaces, as well as in the electronics, semiconductor industries, solar photovoltaic sector (including polycrystalline casting furnaces and single crystal furnaces), and other vacuum industrial furnace equipment within the graphite carbon industry.
Summary
Graphite rigid felt can be categorized into two types based on fiber length: long-fiber and short-fiber rigid felt.
Long-fiber rigid felt possesses a certain shape and self-supporting property because it is formed by laminating soft felt impregnated with resin. In contrast, short-fiber rigid felt is made by adding a binder to fractured carbon fibers.
The density of rigid felt is generally higher than that of soft felt, and its surface can be treated in various ways, such as coating with graphite paper, carbon cloth, or carbon/carbon coatings.
Moreover, based on the raw materials of carbon fibers, graphite rigid felt can be classified into pitch-based, PAN-based, and Rayon-based types.